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Before posting, please read https://www.cgsecurity.org/testdisk.pdf

I got a serious problem with an 1TB external USB 3.0 HDD. When using it to move data from an old computer to a new one, out of a sudden the explorer showed it as a local drive and I haven't any chance to open it and to get access to my data. The windows tool 'Datenträgerverwaltung' (don't know the English term) showed it having the file system Raw.

It tried testdisk 7,0-wip but didn't succeed.
From the log I am picking up the following after having just confirmed the highlighted 'none' for patition table type:
Boot sector
Status: OK
Backup boot sector
Status: OK
Extrapolated boot sector and current boot sector are different.
Can't open filesystem. Filesystem seems damaged.

After having started again and proceed with 'intel' type the following is logged:

I didn't try chkdsk, because the disk manager is showing the disk having now the raw file system and as I understood para 7,5 of testdisk.pdf chkdsk is not available for this file system. Shall I try it nevertheless?

I did read the instruction and since the disk manager showed the disk as having the file system raw, I only used testdisk.
this what I did
1. I selected 'created'
at the next screen patition table type 'none' has been highlighted by testdisk